Ok, don't laugh but this was on TV last night - some of you know how I love the Star Trek TNG - and I found the moment sort of touching...
Riker: In all trust, there is the possibility of betrayal. I'm not sure you were prepared for that.
Data: Were you prepared, sir?
Riker: I don't think anybody ever is.
Data: Then it is better not to trust?
Riker: Without trust there's no friendship. No closeness. None of the emotional bonds that makes us who we are.
Data: And yet you put yourself at risk?
Riker: Every single time.